Advancing earthquake science worldwide
12 June 2019–Researchers who took a closer look at a 1995 tsunami in the Gulf of Elat-Aqaba, at the northeastern tip of the Red Sea, say that the gulf’s surrounding countries should prepare for future tsunami hazards in the economically developing vital region. A team of scientists led by Amos … Continue Reading »
[Read in English] 据地震研究快报(Seismological Research Letters, SRL)发表的一项最新研究 表明，去年 12 月和今年 1 月在中国四川省南部发生的两次中等强度地震 可能是由附近的水力压裂作业诱发的。 在 2018 年 12 月发生的 5.7 级和 2019 年 1 月发生的 5.3 级地震对四川盆地 南部地区的农家和其他建筑㐀成了严重破坏。尤其是 12 月份的地震，㐀 成 17 人受伤，导致直接经济损失约 5000 万人民币（约 750 万美元）。 位于四川盆地南部的长宁页岩气示范区块，自 2010 年启动评估性质的水 力压裂作业，并于 2014 年开始工厂化水平压裂。与此同时，该区地震频 度出现急剧上升趋势。 在美国，科学家们普遍认为石油和天然气产业的废水回注（油气提取过程 中伴生的水被注入深部岩层）是该区特别是俄克拉荷马州诱发地震的主要 原因。然而，越来越多的证据表明，在油气开采过程中通过高压注入水来 破碎岩层的水力压裂可能在俄亥俄州，俄克拉荷马州和加拿大西部的某些 地区诱发了中等规模的地震。 日本地质调查所 Xinglin … Continue Reading »
[讀中文] 5 April 2019–Two moderate-sized earthquakes that struck the southern Sichuan Province of China last December and January were probably caused by nearby fracking operations, according to a new study published in Seismological Research Letters. The December 2018 magnitude 5.7 and the January 2019 magnitude 5.3 earthquakes in the South … Continue Reading »
3 April 2019–There have been no major ground rupturing earthquakes along California’s three highest slip rate faults in the past 100 years. A new study published in Seismological Research Letters concludes that this current “hiatus” has no precedent in the past 1000 years. U.S. Geological Survey researchers Glenn Biasi and … Continue Reading »
1 March 2019–With a growing wealth of seismic data and computing power at their disposal, seismologists are increasingly turning to a discipline called machine learning to better understand and predict complicated patterns in earthquake activity. In a focus section published in the journal Seismological Research Letters, researchers describe how they … Continue Reading »
By mathematically modeling the movements of a locomotive that toppled from the tracks north of San Francisco during the city’s infamous 1906 earthquake, researchers have calculated a lower limit on the earthquake ground motion at the spot of the tipped train. Their report in the journal Seismological Research Letters concludes … Continue Reading »